PA4201_09 PROTEC [Protek Devices], PA4201_09 Datasheet

PA4201_09

Manufacturer Part Number

PA4201_09

Description

Pop-Up-Noise Killer

Manufacturer

PROTEC [Protek Devices]

Datasheet

1.PA4201_09.pdf (8 pages)

Current page: 1 of 8
Download datasheet (2Mb)

FEATURES

•

• >45dB mute attenuation.

• Shunt operation.

• SOFTMUTE during normal operation.

•

• Instantaneous. Power-up and Power-down muting.

• ESD protected outputs.

• 1.5V to 2.7V supply operation.

• Compact 2 x 2 x 0.6mm 8 lead DFN.

APPLICATIONS

Pin Layout

•

95020 Rev.1. 06/09 PATENT PENDING

NOT FOR USE IN LIFE SUPPORT SYSTEMS

Extremely Low supply current (<1μA).

Built-in expansion capability, SOFTMUTE out for

driving additional channels.

Cell phones

PDA’s

Portable DVD players

Portable MP3 players

Notebook Audio

Set-top boxes

Digital Video Recorders

LCD TVs

Home Theater systems

ANALOG PRODUCTS DIVISION

561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 431-2288

Vcc

C3 4.7µF

Mute Control

C1 0.1µF

www.protekanalog.com

2X2x0.6mm

PA4201

Vcc

SMUTEOUT

Right Input

Mute2

Mute1

Left Input

GENERAL DESCRIPTION

PA4201 (PUNK) is a low power (I

CMOS mixed signal device.

noise in audio circuits and systems.

PUNK boasts several features that make it a “one of a kind”

product on the market. Most prominent is the feature that

allows the designer to implement SOFTMUTE on an audio

line during normal operation. PUNK is an exceptional product

for multi-channel devices as it is capable of expanding the

SOFTMUTE operation into systems s u c h a s Dolby ® 5.1,

DTS™.

PUNK requires few external components for its operation,

working from low to medium supply voltages of 1.5V to 2.7V.

On power-up and power-down the audio inputs to succeeding

amplifiers are switched to a convenient low impedance voltage

rail. Muting the amplifiers, preventing the audible pop, that is

normally heard in the headset.

PUNK operates as a passive shunt device. So the designer

does not have to worry about the PUNK introducing any kind

of noise or distortion into the system. While consuming less

than 1μA of supply current PUNK provides more than

45dB of mute attenuation at the audio lines.

PUNK is equipped with ESD (Human Body Model) protection

circuitry on the outputs.

PUNK is available as an 8L low profile 0.6mm DFN package

and is specified for operation over the -40° C to +85°C

temperature range.

Typical Application Circuit

PUNK’s primary function is to control power supply transition

R2 220Ω

R4 220Ω

C5 0.22µF

C4 0.22µF

Pop-Up-Noise Killer

R3 10KΩ

R5 10KΩ

Right Output

Left Output

< 1μA) monolithic

PA4201

Related parts for PA4201_09

PA4201_09 Summary of contents

Page 1

ANALOG PRODUCTS DIVISION FEATURES • Extremely Low supply current (<1μA). • >45dB mute attenuation. • Shunt operation. • SOFTMUTE during normal operation. • Built-in expansion capability, SOFTMUTE out for driving additional channels. • Instantaneous. Power-up and Power-down muting. • ESD ...

Page 2

ANALOG PRODUCTS DIVISION PIN OUT Pin Name Function 1 VCC Positive power supply. 1.5V to 2.7V ±10% 2 RCS Power On mute delay resistor-capacitor connection 3 CEXT Soft mute delay capacitor 4 SMUTEOUT Soft Mute OUT for multiple channels 5 ...

Page 3

ANALOG PRODUCTS DIVISION RECOMMENDED OPERATING CONDITIONS: DC OPERATING CONDITIONS Unless otherwise specified ± 10 Symbol Parameter V Power Supply DD I Supply Current DD T Ambient Temperature A V Logic High O/P Voltage OH V Logic ...

Page 4

ANALOG PRODUCTS DIVISION TURN ON TIME C µ ext softmute 0.1 36.03 0.2 71.06 0.3 97.4 0.4 110.05 0.5 117.2 CAPACITIVE LOAD Max Cap Load @ SMUTEOUT EXT 5 ...

Page 5

ANALOG PRODUCTS DIVISION THEORY OF OPERATION STARTUP During Startup, the Power supply ramps from 0V to VCC. This time is usually in excess of 20ms. As soon as this change in voltage is sensed, PUNK latches the Mute Controller outputs ...

Page 6

ANALOG PRODUCTS DIVISION Figure 4: Startup Pop-Noise without PUNK Figure 5: Shutdown Pop-Noise without PUNK Figure 6: Startup Pop-Noise with PUNK 561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 431-2288 95020 Rev.1. 06/09 PATENT PENDING ...

Page 7

ANALOG PRODUCTS DIVISION PACKAGE DIMENSIONS AND MEASUREMENTS PA4201DN P1 P2 TOP VIEW P3 g SIDE VIEW Reel Dia 178 (7”) 2.00±0.10 2.00±0.10 0.65±0.10 t Top cover tape K0 561 E. Elliot Road #175 Chandler, AZ 85225 Tel: ...

Page 8

ANALOG PRODUCTS DIVISION PACKAGE DIMENSIONS AND MEASUREMENTS PA4201DQ PACKAGE OUTLINE - - 0.0I0” (0.25 MM MOUNTING PAD ...

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